Fix possible NPE when create AzureArtifact from file, AB#1946705

Author: Flanker32

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-lib/src/main/java/com/microsoft/azure/toolkit/intellij/common/AzureArtifact.java

@@ -13,9 +13,11 @@
 import com.microsoft.intellij.util.MavenUtils;
 import icons.GradleIcons;
 import icons.MavenIcons;
+import org.apache.groovy.parser.antlr4.util.StringUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.idea.maven.project.MavenProject;
 
+import javax.annotation.Nullable;
 import javax.swing.*;
 import java.nio.file.Paths;
 import java.util.Objects;
@@ -31,7 +33,11 @@ private AzureArtifact(final AzureArtifactType type, final String name, Object ob
         this.referencedObject = obj;
     }
 
-    public static AzureArtifact createFromFile(@NotNull String path) {
+    @Nullable
+    public static AzureArtifact createFromFile(@Nullable String path) {
+        if (StringUtils.isEmpty(path)) {
+            return null;
+        }
         final VirtualFile virtualFile = LocalFileSystem.getInstance().findFileByPath(path);
         return createFromFile(virtualFile);
     }

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-lib/src/main/java/com/microsoft/azure/toolkit/intellij/common/AzureArtifactManager.java

@@ -89,15 +89,15 @@ public String getFileForDeployment(AzureArtifact artifact) {
         }
     }
 
+    @Nullable
     public AzureArtifact getAzureArtifactById(String artifactId) {
         return getAllSupportedAzureArtifacts().stream().filter(artifact -> StringUtils.equals(getArtifactIdentifier(
                 artifact), artifactId)).findFirst().orElse(null);
     }
 
+    @Nullable
     public AzureArtifact getAzureArtifactById(AzureArtifactType azureArtifactType, String artifactId) {
-        return azureArtifactType == File ? AzureArtifact.createFromFile(artifactId) :
-               getAllSupportedAzureArtifacts().stream().filter(artifact -> StringUtils.equals(getArtifactIdentifier(
-                artifact), artifactId)).findFirst().orElse(null);
+        return azureArtifactType == File ? AzureArtifact.createFromFile(artifactId) : getAzureArtifactById(artifactId);
     }
 
     public String getPackaging(AzureArtifact artifact) {